安徽工程大学学报
安徽工程大學學報
안휘공정대학학보
JOURNAL OF ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE(NATURAL SCIENCE)
2015年
2期
50-56
,共7页
动态补偿器%PVDF%傅立叶变换%多项式%最小二乘算法
動態補償器%PVDF%傅立葉變換%多項式%最小二乘算法
동태보상기%PVDF%부립협변환%다항식%최소이승산법
post-distorter structure%hammerstein post-distorter%polynomial%least squares algorithm
为了解决PVDF压电薄膜测量低频信号失真大、泄漏快和阻抗匹配难等问题，首先探讨了 PVDF的工作机理，继而在频域内使用高效的最小二乘算法设计了一款 Hammerstein动态补偿器模型。仿真结果表明，该动态补偿器模型能快速有效地补偿PVDF传感器低频失真，使PVDF压电膜在低频领域的应用成为可能。
為瞭解決PVDF壓電薄膜測量低頻信號失真大、洩漏快和阻抗匹配難等問題，首先探討瞭 PVDF的工作機理，繼而在頻域內使用高效的最小二乘算法設計瞭一款 Hammerstein動態補償器模型。倣真結果錶明，該動態補償器模型能快速有效地補償PVDF傳感器低頻失真，使PVDF壓電膜在低頻領域的應用成為可能。
위료해결PVDF압전박막측량저빈신호실진대、설루쾌화조항필배난등문제，수선탐토료 PVDF적공작궤리，계이재빈역내사용고효적최소이승산법설계료일관 Hammerstein동태보상기모형。방진결과표명，해동태보상기모형능쾌속유효지보상PVDF전감기저빈실진，사PVDF압전막재저빈영역적응용성위가능。
Since the PVDF film has some problems like large distortion,fast leakage for low frequency signal measurement and difficulty in impedance matching,this paper firstly discussed the working mech-anism of PVDF.Then,the post-distortion model has been designed by using the least squares algorithm in frequency-domain.It is confirmed by computer simulation that the Hammerstein post-distorter could efficiently compensate the low-frequency distortion conducted by the PVDF sensors,which makes it pos-sible for PVDF film to be applied in the low frequency domain.
